Question

Which of the following trinomials could represent the product (x + m)(x + n) if m = 5 and n = -7?

Answer 1

x² - 2x - 35

Explanation:

Correct answer on my test

Answer 2

x² - 2x - 35

substituting in the values for m and n gives

(x + 5)(x - 7) → expand using FOIL

= x² - 7x + 5x - 35 = x² - 2x - 35